V2EX linear-system

Linear System

Definition / 定义

线性系统:由若干个线性方程线性关系组成的整体,常用来求解多个未知量之间的关系;在数学、物理、工程与数据科学中非常常见。(常见形式如“线性方程组”。在控制与信号处理中也可指“线性系统”这一类满足叠加原理的系统。)

Pronunciation / 发音

/lnir sstm/

Examples / 例句

The engineer solved a linear system to find the unknown currents in the circuit.
工程师通过求解一个线性系统来找到电路中未知的电流。

After collecting the data, we modeled the problem as a linear system and used matrix methods to estimate the parameters accurately.
收集数据后,我们把问题建模为线性系统,并用矩阵方法精确估计参数。

Etymology / 词源

linear 来自拉丁语 linearis(“线的、直线的”),源头与 linea(“线”)相关;system 来自希腊语 systēma(“组合在一起的整体”)。合起来 linear system 字面意思就是“由线性关系组成的整体/体系”。

Related Words / 相关词汇

Literary Works / 文学作品例子

  • Gilbert Strang,《Introduction to Linear Algebra》:在求解线性方程组、矩阵分解等章节中频繁讨论 *linear system(s)*。
  • Sheldon Axler,《Linear Algebra Done Right》:在线性映射与方程求解相关内容中出现该术语。
  • Erwin Kreyszig,《Advanced Engineering Mathematics》:在工程数学中用 linear systems 描述电路、力学与微分方程离散化后的模型。
  • Gene H. Golub & Charles F. Van Loan,《Matrix Computations》:大量涉及大型 linear systems 的数值求解与算法。
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